#-*-coding:utf-8-*-
import sys,os
sys.path.append(os.getcwd()+'/../')
#上级目录
from a import show_a
#同级目录
from b import show_b
#下级目录
from level2.c import show_c
#下下级目录
from level2.level3.d import show_d

#from ..a import show_a

def tx():
    show_a()
    show_b()
    show_c()
    show_d()
    
if __name__ == '__main__':
    tx()